doc: use ryu version constant

- Use ryu version constant instead of setting the version by hand.
- update Copyright

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

doc/source/conf.py

@@ -12,6 +12,7 @@
 # serve to show the default.
 
 import sys, os
+from ryu import version as ryu_version
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -40,17 +41,17 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-project = u'ryu'
-copyright = u'2011, ryu development team'
+project = u'Ryu'
+copyright = u'2011, 2012 Nippon Telegraph and Telephone Corporation'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '0.1'
+version = ryu_version
 # The full version, including alpha/beta/rc tags.
-release = '0.1'
+release = ryu_version
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.